Factory offer O-ring, rectangular-ring, rubber gasket, oil seal& rubber parts.We can make all kinds of rings with different ... designing and manufacturing all the oil seal, Oring and other rubber parts. 2) Applications: automobile, motorcycles, agricultural machinery, trucks, buses, ... , pump and other equipment.3) Material: NBR, FKM (VITON), MVQ (SILICONE), ACM, EPDM, HNBR and so on.4) OEM and ODM ...